Which are true of the function f of x is equal to 49 times 1 seventh to the x th power ? Choose three correct answers.
A
The domain is the set of all real numbers.B
As x increases by 1 , each y -value is one-seventh of the previous y -value.C
The range is y is greater than 0 .D
The domain is x is greater than 0 .E
The range is the set of all real numbers.